This video cover storage or SAS cabling for
new PowerProtect Data Domain 6900 systems.
A standard PowerProtect DD6900 system
will have 1 to 8 ES40 storage shelves.
An ES40 will have 15
4 Terabyte disk drives.
This does not cover how the
hardware is mounted in the rack.
Please refer to the installation guides
for the various components
for information on how to rack.
If you were to purchase a pre-racked system,
this is what it would look like.
You can see the PowerProtect DD 6900
and the 8 ES40s.
These are positioned in the rack
to make cabling as simple as possible.
There are two reasons for the gap
between the DD6900
and the 5th ES40.
1U of that gap
is to allow for the cable management arms
that are mounted to the rear of
PowerProtect DD6900.
The remainder allows for the addition
of a 2nd PowerProtect DD6900
that would be used in an HA system.
You can drop the ES40s by 3U
if you plan to never convert your system to HA.
This in turn leaves more space
in the rack for other equipment if desired.
Here is a back view of the ES40.
There are two controllers with B on the top
and A on the bottom.
The port identifiers that a SAS cable
can plug into are on the bottom.
This is a back view of a
PowerProtect DD6900
showing the location of the SAS controllers
and their port identifiers.
The blue and green lines represent SAS cables.
The blue lines go to the PowerProtect DD6900 controller.
On the right-hand side,
the cable goes from the PCIe SAS card port A
to port A of Controller A
on the top ES40.
On the left-hand side,
the cable goes from the PCIe SAS card port A
to port A of Controller B on the bottom ES40.
The four ES40s here
are said to be on the same chain.
The Green lines represent the cables that complete the chain.
On the right side
it connects Port B of controller B on the top ES40
to Port A of controller B on the one next down.
On the left side
it connects Port B on Controller A of the bottom ES40
to Port A on Controller A on the next one up.
This continues continues on to complete the chain.
In this view,
we see how the next four ES40s are connected.
In this case,
the purple lines represent the cables going from the SAS card port B on the right
to the top ES40
and from the SAS card Port B on the left
to bottom ES40 of that group.
The Green lines are connected the same as the first chain on the bottom.
So that covers a non-HA PowerProtect DD6900 system.
The ES40s are installed from the bottom.
Consider the use of an anti-tip mechanism
or have the rack bolted to the floor.
This shows a full HA configuration.
You’ll note that the 2 chains of ES40s are in the same position
The cabling here is the same as the non-HA system
with the addition of an FS25
as well as the network cables that interconnect to the second
PowerProtect DD6900.
For the bottom ES40s,
the yellow connections have been added.
On the left,
they go from the second PowerProtect DD6900’s
SAS Port A
to top ES40 Port B of Controller A.
And on the right,
from the SAS Port A to the bottom
ES40, Port B of Controller A.
For the top chain,
red connections have been added.
On the left,
they go from the SAS Port B
to top ES40, port B of Controller B
and on the right, from the SAS Port B
to Port B of Controller A.
on the bottom ES40 of the chain.
The third chain for both PowerProtect DD6900s
connect to the FS25.
From the first PowerProtect DD6900
the orange connections on the left
go from the SAS Port C
to the FS25, port A on Controller A
and on the right,
from the SAS Port C to the FS25, Port A of Controller B.
The light blue connections from the top PowerProtect DD6900
go from the left SAS Port C
to the FS25, port B of Controller A
and on the right,
from the SAS Port C
to the FS25, port B of Controller B.
There is a fair amount of flexibility
when install a PowerProtect DD6900 in a rack.
These recommendations are based on creating a consistent layout,
so we can provide the correct cables with an order
and create a system that is accessible and serviceable.
As such,
this is not the only way to create a system.
Customers may have other requirements.
We have rules and guidelines that can be
applied to new systems as well as upgrades.
These are covered in greater depth in the documentation.
For more information about setup and upgrade processes
for PowerProtect DD
visit support.emc.com